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lubasha [3.4K]
3 years ago
12

I have no idea what I’m doing please help!! the number 4.121221222... is... *

Mathematics
1 answer:
andriy [413]3 years ago
5 0

Answer:

the answer is real, irrational

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what is the sum of two numbers is "-7." Two times the first number equals 4 the second number. Find the two numbers.
skelet666 [1.2K]

Answer:

\sf \text{The numbers are $\dfrac{-14}{3} $ and $\dfrac{-7}{3}$}

Step-by-step explanation:

Let the numbers be x , y

Sum of two numers = -7

x + y = -7------------(I)

Two times the first number equals 4 the second number.

2x = 4y  ----------(II)

Divide both sides by 2

       \sf \dfrac{2x}{2}=\dfrac{4y}{2}

        x = 2y

Subtitute x = 2y in equation (I)

2y + y = -7

      3y = -7

       y = -7/3

Plugin y = -7/3 in equation (II)

\sf 2x = 4*\dfrac{-7}{3}\\\\2x = \dfrac{-28}{3}\\\\x =\dfrac{-28}{3*2}\\\\x = \dfrac{-14}{3}

4 0
3 years ago
This is confusing 3(7x+5)(3x-2)=0 solve show work. 4(c+9)^2=0 solve and show work. Use the zpp method to solve.
andreyandreev [35.5K]
(7x + 5)(3x - 2) = 0 \\ x = - \frac{5}{7} \: \: \: \: \: or \: \: \: \: x = \frac{2}{3}

(c+9)=0
c=-9
7 0
3 years ago
If 4^x= 40, then x = ????
Over [174]

Answer: The answer is 10 just divide the 4 by 40

Step-by-step explanation:

3 0
3 years ago
multiply the following polynomials and write the resulting polynomial in descending order. (3x-8)(2x^2+4x-9)
Veronika [31]

Answer:

Given the polynomial: (3x-8)(2x^2+4x-9)

Since, arranging of polynomial can be made by forming the given polynomial into the general form.

Multiply the following  polynomials are;

(3x)(2x^2+4x-9)-8(2x^2+4x-9))

Using distributive property: a\cdot(b+c) = a\cdot b+a\cdot c

(6x^3+12x^2-27x)- (16x^2+32x -72)

Remove the parenthesis; we get;

6x^3+12x^2-27x- 16x^2 -32x +72

Combine like terms;

6x^3-4x^2-59x+72

⇒This is the general form of the polynomial equation.

Since, the given polynomials can be written from the order of powers i.e,

6x^3-4x^2-59x+72

To arrange this polynomial in descending order means to arrange the powers of variables in each term in descending order.

Therefore, the resulting polynomial in descending orders is, 6x^3-4x^2-59x+72

6 0
3 years ago
Find the zeros for the quadratic equation x2+x−10=10
jeyben [28]
X^2 + x - 10 = 10
x^2 + x - 20 = 0
(x + 5)(x - 4) = 0
x = -5 or x = 4
7 0
3 years ago
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